struct vcs_poll_data {
struct notifier_block notifier;
unsigned int cons_num;
- bool seen_last_update;
+ int event;
wait_queue_head_t waitq;
struct fasync_struct *fasync;
};
container_of(nb, struct vcs_poll_data, notifier);
int currcons = poll->cons_num;
- if (code != VT_UPDATE)
+ if (code != VT_UPDATE && code != VT_DEALLOCATE)
return NOTIFY_DONE;
if (currcons == 0)
if (currcons != vc->vc_num)
return NOTIFY_DONE;
- poll->seen_last_update = false;
+ poll->event = code;
wake_up_interruptible(&poll->waitq);
kill_fasync(&poll->fasync, SIGIO, POLL_IN);
return NOTIFY_OK;
poll = file->private_data;
if (count && poll)
- poll->seen_last_update = true;
+ poll->event = 0;
read = 0;
ret = 0;
while (count) {
vcs_poll(struct file *file, poll_table *wait)
{
struct vcs_poll_data *poll = vcs_poll_data_get(file);
- __poll_t ret = DEFAULT_POLLMASK|EPOLLERR|EPOLLPRI;
+ __poll_t ret = DEFAULT_POLLMASK|EPOLLERR;
if (poll) {
poll_wait(file, &poll->waitq, wait);
- if (poll->seen_last_update)
+ switch (poll->event) {
+ case VT_UPDATE:
+ ret = DEFAULT_POLLMASK|EPOLLPRI;
+ break;
+ case VT_DEALLOCATE:
+ ret = DEFAULT_POLLMASK|EPOLLHUP|EPOLLERR;
+ break;
+ case 0:
ret = DEFAULT_POLLMASK;
+ break;
+ }
}
return ret;
}